e-journal

Pseudocapacitive properties of electrodeposited porous nanowall Co3O4 film

---

Abstract.
A porous nanowall Co3O4 film is prepared by a facile cathodic electrodeposition. The as-prepared porous
nanowall Co3O4 film shows a net-like porous structure with huge porosity. The porous network is made
up of free standing interconnected Co3O4 nanoflakes with a thickness of 20 nm. As cathode material
for pseudocapacitors, porous nanowall Co3O4 film exhibits weaker polarization, higher electrochemical
reactivity and better cycling performance as compared to the dense Co3O4 film. The specific capacitance of
porous nanowall Co3O4 film is 325 F g−1 at 2 A g−1 and 247 F g−1 at 40 A g−1, respectively, much higher than
that of the dense Co3O4 film (230 F g−1 at 2 A g−1 and 167 F g−1 at 40 A g−1). The better pseudocapacitive
performances of the porous nanowall Co3O4 film are attributed to its highly porous morphology, which
provides large reaction surface and short ion diffusion paths, and relaxes the volume change caused by
the reaction during the cycling process.

Keywords:
Cobalt oxide
Porous film
Electrodeposition
Supercapacitor

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

-

Penerbit

New York : Elsevier Ltd.., 2011

Deskripsi Fisik

Electrochimica Acta 56 (2011) 7163– 7170

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

56 (2011)

Subjek

PSEUDOKAPASITOR

Info Detail Spesifik

-

Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar